Fix unused import

Author: bmarty

matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/widgets/helper/WidgetFactory.kt

@@ -20,7 +20,6 @@ import org.matrix.android.sdk.api.session.content.ContentUrlResolver
 import org.matrix.android.sdk.api.session.events.model.Event
 import org.matrix.android.sdk.api.session.events.model.toModel
 import org.matrix.android.sdk.api.session.room.sender.SenderInfo
-import org.matrix.android.sdk.api.session.user.model.User
 import org.matrix.android.sdk.api.session.widgets.model.Widget
 import org.matrix.android.sdk.api.session.widgets.model.WidgetContent
 import org.matrix.android.sdk.api.session.widgets.model.WidgetType